Watch Movement Selection Mechanism for Chronograph and Countdown Functions
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Solution Overview
Problem
Existing watch movements with chronograph and countdown functions are complex, require prior adjustments, and have a large number of parts, making them difficult to implement and use.
Innovation Solution
A compact selection mechanism using a rocker with cogs and a cam system that allows for easy switching between chronograph and countdown functions, reducing the number of parts and simplifying the mechanism, while enabling precise average speed calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a watch movement includes both chronograph and countdown functions with separate adjustment mechanisms, then the functionality is comprehensive, but the device complexity and number of parts increases
Solution Approach 1:
The selection member serves multiple functions: it selects between chronograph and countdown modes, initiates the selected function, and resets the chronograph. This multi-functionality reduces the need for separate adjustment mechanisms for each function, thereby reducing overall device complexity while maintaining comprehensive functionality
Solution Approach 2:
The patent combines the selection and activation functions into a single selection member that operates through one piece. The selection member integrates the mode selection, function initiation, and chronograph reset capabilities into a unified mechanism, reducing the number of separate parts and simplifying the overall structure
2Adaptability or versatility
If a watch movement uses a complex mechanism with many parts to achieve multiple functions, then the functionality is comprehensive, but the ease of manufacture and implementation decreases
Solution Approach 1:
The movement is segmented into distinct functional modules: a chronograph module with its own driving wheel and mobile, a countdown module with separate components, and a unified selection member. This modular segmentation allows each module to be manufactured and assembled independently, simplifying the overall manufacturing process while maintaining comprehensive functionality
Solution Approach 2:
The selection member is designed as a universal component that handles multiple operations (mode selection, function initiation, chronograph reset) through a single mechanism, reducing the total number of parts that need to be manufactured and assembled, thereby improving ease of manufacture and implementation
3Adaptability or versatility
If a countdown function requires prior adjustment of the value to be counted down, then the countdown can be customized, but the ease of operation decreases
Solution Approach 1:
The countdown value is pre-adjusted using the selection member before the countdown function is activated. By performing the adjustment action in advance through the same selection member used for mode selection, the patent eliminates the need for separate adjustment mechanisms, thereby maintaining customization capability while improving ease of operation
Solution Approach 2:
The selection member serves as a universal control that handles both the pre-adjustment of countdown values and the activation of functions. This multi-functionality allows users to customize and activate the countdown through a single, intuitive operation, improving ease of use while preserving customization options
Data Source
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AI summary
The invention relates to a watch movement having at least first and second functions implementing the display of at least first and second information. According to the invention, the movement has a selection member comprising an actuator, at least one rocker configured to take at least first and second positions, corresponding respectively to the first and second functions, and corresponding to the establishment of respective first and second kinematic links, and a cam cooperating with the actuator and the at least one rocker so as to establish the first and second kinematic links.